The combined weights of Caleb Schwab and the two sisters riding in the raft with him on the Verruckt water slide ride at Schlitterbahn Water Park in Kansas City was 385 pounds, which is 15 pounds less than the 400 pound minimum required for the ride, PEOPLE has learned.

A police report PEOPLE has obtained from the Kansas City, Kansas Police Department shows Caleb's weight as 75 pounds. His height appears to be 5 feet. One rider in the raft with him was a 32-year-old woman who is 5 feet 5 inches and 140 pounds. Also in the raft was her sister, 25, who is 5 feet 6 inches and 170 pounds, according to the report.

The requirements for the ride call for 2- 3 riders per raft with a combined weight between 400 and 550 pounds. Each rider must be at least 54 inches tall. The ride uses restraints made from hook-and-loop fastener material, (similar to VELCROŽ), but an amusement park safety expert told PEOPLE that such material should never have been used for this type of ride.

Schlitterbahn spokeswoman Winter Prosapio tells PEOPLE all riders are weighed before going on the ride.

"Riders are weighed at the bottom of the ride," she says. "There is a scale there at the bottom and a scale at the top, and if they don't meet the weight requirement there is a red light that goes off."

"When asked about the weight of the riders in Caleb's raft, Schlitterbahn told PEOPLE Monday that she had yet to see that information.

Caleb, 10, died Aug. 7 while on the ride, which can hit speeds of up to 70 mph. He was in the front seat; seated behind him in the raft were two sisters he didn't know. One woman had a broken jaw from the accident and another suffered a broken bone below her eye and a bruised eyeball.

Caleb was found dead at the bottom of the slide in the pool and police confirmed to PEOPLE that he had been decapitated.

Since the incident, PEOPLE has learned that Verruckt's scheduled 2014 opening was delayed multiple times due to glitches, including one issue that caused water rafts to fly off the slide and into the air.

Calls for comment to the Schwab's family attorney were not immediately returned.

I don't understand where they got the original lighter weights. Drivers licenses maybe? If the listed weights were true, that's a lot of weight in the back with a tiny little kid in the fron . Not much to hold the front down

Police: Weights in Kansas water slide death within limits

CBS/AP
Aug 16, 2016 9:43 AM EDT

KANSAS CITY, Kan. - Police say combined weights for a 10-year-old boy and two other people riding a raft with him at a water park when he was killed were within the ride's limits.

Caleb Schwab, the son of a state legislator in Kansas, died while riding the world's tallest water slide. Officials said he suffered a fatal neck injury, and was dead by the time first responders reached him.

The boy died on the 168-foot "Verruckt" at Schlitterbahn WaterPark in Kansas City, Kansas. Riders are weighed to ensure each raft carries between 400 pounds and 550 pounds.

Is the water park liable for death of a 10-year-old boy?
Police Monday released a report showing one rider at 140 pounds, another at 170, and an unclear weight for Caleb. He would have to weigh 90 pounds to make the trio's weight reach 400 pounds.

But police said weights taken at a hospital after the accident show one person weighed 275 pounds, another weighed 197 pounds and a third weighed 73 pounds, putting the combined weight at 545 pounds.

Questions about safety and inspection keep popping up in the wake of Schwab's death.

A document released by a state agency says all the rides at the water park passed private inspections in June, including the water slide on which a 10-year-old boy died.

When it initially opened, the park advertised the ride for only people 14 years and older. That age requirement is no longer posted on the park's website, though passengers must be at least 4 feet, 6 inches tall and the combined weight of the passengers in the raft must fall between 400 and 550 pounds.

The apparent shift away from the age restriction could be one of the questions in determining liability, according to CBS News legal analyst Rikki Klieman, who said the park owner and ride designer face potential legal troubles over Schwab's death.

There's also anecdotal evidence of problems with the ride's safety equipment. Parkgoer Paul Oberhauser told CBS News his belt came off while riding with a friend and his 9-year-old son about two weeks ago.

"As soon as I hit the bottom of the first curve the shoulder strap just kind of busted loose," Oberhauser said.

He said he had to grip handles by his legs to hold on and told park staff what happened.

"They kinda said, 'Oh no, really,' or something, 'Yes, that's not good.' And so it sounded like you know they were gonna do something about it," Oberhauser said.

yeah i'm betting this had more to do with the straps coming lose than the weight thing. i mean, who the hell thought velcro was a good idea? the kid's belt probably came loose and he didn't have the strength to hold on.

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